Safety razor



June 22,1926. 1,589,826

l N. A. STRAND SAFETY RAZOR Filed Feb. 4, 1926 Patented June 22, 192.6.

UNiTED f-sTATEs PATENT. OFFICE.

NEIL A. STRAND, QF BROOKLYN', YORK.

SAFETY nazca.

Applicatien led February@ jl926. Serial No. 85,817.

This invention rel-atesto cutlery and has particular .reference tosafety razors.

Among the objects of the invention is to ,provide a safety razor havinga flexible. blade provided 'with a plurality of cutting edges, saidedges being all substantially straight and constituting the entireperiphery of the blade.`

'Another object of the invention is to pro- Y vide a safety razor bladeof normally flat blade, the blade thus having two oppositely disposedacute angles and two oppositely disposed obtuse angles.

A still further-object of the invention isto provide a safety razorincluding a guard. and #blade holding means co.operatingA therewith, theguard and holding means being similarly formed, each' having fiat endportions disposed at -an obtuse angle to each other and Haring outwardor in a direction away from the handle and the bisector cf the an le'which is coincident with the axis of the andle.

A;`further object of the invention is to providev a safety razor havinga blade with a plurality of cutting ed es forming the complete peripherythereo the periphery being divided into a plurality of cutting edges,the edges being selectively operati-ve for shaving purposesin successionwithout adjustment of the -holding means and handle, and s odisposedwith respect tothe axis of the handle thatthe blade may be movedover the face in shaving along a path parallel to the handleanddirection of movement of the handle while the. cutting edge occupies aninclined position with re and direction 'of movespect to said axis ment.

With the ment and combination of parts hereinafter described andclaimed, and while Athe invention` is not restricted to the exactdetailsof construhtion disclosed orsuggested here- .the 11ne 5--5 ofFig. 1.

:foregoing and other objectsin, 'viewthe invention consists inthearrange-l like reference characters designate the same parts in theseveral views, and in which- Figure 1` is aside elevation of a preferredembodiment'.- of the invention in assembled condition.

Fig. 2 is a side elevation of the same mechanismin dispersed condition.

.Flg.v ,3 is a bottom plan view of the top or holding plate. 1

Fig. 4 is a plan view of' a blade.

Fig. 5 1s a transverse sectional detail on Fig. 6 is a top p lan view oras would be seen on looking down in Fig-l, but with portions brokenaway, showing larticularl the disposition of the guard Vngers witrespect to -each other andthe cutting edges of the blade.

Fig. 7 ,is a diagram indicating the manner of formation of the bladesfrom al single uniform strip of steel.

Referring now more specifically to' the drawings, I show mg improvedrazor which comprises complete ut-four arts includin the blade, said`four arts being .a ard plate 10, a top or-holding plate 11, a lade 12,and a handle 13. A The handle-is of any suitable design preferablystraightand rounded so as .to be formed rapidly and cheaply on a screwmachine, and provided with a ysocket 14 at one end.

The guard plate is of rigid material having two Hat end portionsdisposed at an oblique angle to each other, and vhaving-a central hole15`adapted to register with the socket 14. In lan the plate 10 is in theform of a rhom us having four equal sides and having a series of guardfingers. 16 formed along the edges, all the lingers being parallel t oneanother, while at the points'or an points 17 and 18. All the ingers and.guard threaded there are'formed guard .i

points are bent downward slightly from the planes of the parts to whichthey are connected, or toward the handle, but serve to I effectively.guard' the sharp cutting `edges and .the several angles or points of theblade,

along the narrow dimensions of the guard plate. theA plateiis straightas shown clearly l10o all of-which 'are sharp.l Transversely or.'

guard plate at convenient points between the eXtreme ends and thecentral hole 15, are provided with holes 19.

'Ihe blades 12 are of equilateral .quadrilateral form or diamond shapeand are cheaply andl rapidly formed from ribbon like metal such as4steel as indicated in Fig. 7 by a succession of diagonal cuts 20.Either coincidentu with the cutting of the blades from the strip or atany other time, each blade is formed with a central hole 21 and two endholes -22 which are adapted in practice to register with the holes 19 inthe guard' plate. The four edges of each blade eing straight areeasilysharpened for cutting purpose, making a cutting edge around theentire periphery ofthe blade, and thereby the. facility forre-sharpening the blades' if desired is increased over blades havingcurved cutting edges. These blades are normally flat but being of thinmetal are capable of easy flexing between their ends so as to adapt them-to conform to the flat sur- .o faces of the guard plate.

Any suitable means may be provided to flex the blade to make it conformto'and be held in place against the guardplate for practice, this meansbeing shown as comprising the top or holder plate 11, which like theguard plate is of rigid metal and shaped so that it possesses two llatend portions having the saine angle of diver ence Jfrom each other asthe guard plate. refeably the shape of the holding plate is similar tothat of the blade and guard plate, though slightly smaller than theblade so as to expose the required amount of the cutting edge portion ofthe blade for shaving purposes. In the axial center of the top plate l1is liXed a stud or screw 23 adapted to pass downward through the hole 21in the blade, the holev 15 in the guard plate, and in-tothe socket 14 ofthe handle. When the plates are brought into close relation with eachother with the blade between them and the handle aixed to the screw andtightened, theV blade willbe adjusted in practical position for shavingpurposes and the parts will all be held from relative movement. Means isprovided also to prevent relative rotationv of the plates and' blade,this means being shown as a pair of pointed studs 24 tiXed to the underside of the end portions of the top plate and extending downward withtheir axes substantially parallel to each other and preferably diamondshape in cross section to harmonize with the. general configuration ofthe instrument and to possess relatively sharp points adapted to passreadily through the holes 22 in the blade and into the holes 19 of theguard` plate. This taper of the studs insures easy assembly of the partseven though rthe blade is normally flat. It is to be understood,however, that with respect ieeeae to the shape of these studs or anyother secondary details I do not wish to be unnecessarily limited.

'Io assemble the razor the blade is placed upon the center stud or screw23 and the stud is then passed through the hole 15 of the guard plate,the operator applying force enough upon the plate to cause the stud 23to be engaged in the socket 14 of the handle, and then by holding theplates and blade in one hand and turning thel handle with the otherhand, the parts are clamped together and the studs 24av are caused topass through the registering holes 22 and 19. In the use of the razorthe handle is grasped in any convenient manner and either of the sideedges ofthe plate will be drawn ovei` the face, the position of thecuttingv edge being inclined to the axis of the handle when the handleis drawn directly forward or downward parallel to or in line with itsanis, as a result of the upward Obliquity of the end portion of theblade bearing the active edge and also because of the triangular ortapered form of such end of the blade. While for easy access to thoseportions of the face not ordinarily easily accessible, as for the upperlip, any acute angular portion of the blade may ployed in advance of thebroader portion, for usual normal shaving purposes the handle and razorwill be drawn directly in line with the handle, the broader point orportion of the blade moving in advance of the narrower or sharper pointthereof. In any event, however, all portions of the-blade are amplyguarded by the guard lingers and guard points to 'safeguard the shaverfrom being pric-ked or cut. Again, the parallel arrangement of thelingers 16, or with the arrangement of the fingers along one edgedirectly in lline with those of that edge directly across the narrowerend portion of theblade, is most favorable for the reception. of thebeard along 0r between the fingers while the razor is drawn in the lineof the axis of the handle and with the shortery point of the bladetrailing behind the broader point above described and making an inclinedcut across the face.

I claim: t

l. In a safety razor, the combination of a guard plate, a top plate, ablade between said plates, said plates being of obtuse angular formationlengthwise thereof, a handle, and means associated with the plates andco-operating with the handle to hold the plates in operative position,the end portions of the plates diverging from each other in a directionremote from the handle. f'

2. In a safety razor, the combination of a handle, a guard plate havingtwol flat portions disposed at an angle to each other, the bisector ofsaid angle being coincident with the axis of the handle, the datportions of the guard being divergent from each other in a directionaway rom' the handle and said bisector, a normally flat blade, and

" means tol flex the blade .centrallyto cause it to conform to and beheld against the rl"he combination as set'forth in claim 2 in which theblade is formed with cutting edges along its entire periphery.

4:. The combination as set forth in claim Q- in which the blade isprovided with four cutting edges intersecting one another inobliqueangles, the guard plate-serving to hover and shield the angles of theblade as well as the cutting'edges thereof. n

5., lin a safety razor, the combination'ofa vguard plate and a clampingplate bothhaving similar obtuse angle formations, a blade between saidplates, .adjustable means serving to bind the plates in close relationto each other with the blade grippedl between them, and auxiliary meansextending from one plate through thel blade and to the other plate toprevent relative rotation between the blade and the plates, saidauxiliary means including a stud projecting at an `ing from one of said)oblique angle from the plate which carries .it and-havlng its parallelto "the axis of the binding means.

handle having a threaded socket at one end, a guard plate having anobtuse angular formation and located adjaeent to said. socket with theend portions of the plate` `to the blade and having a rigid screwprojecting from its center through said registering holes and havingadjustable co-operation with said socket, said blade and plates being ofsimilar diamond shape, and a pair of rigid studs having plates towardthe other, said other plate and blade having holes to receive saidstuds, said studs being tapered and of diamond shape in cross section.

In testimony ture. y

NE1L A. straling. Y

arallel axes project-v whereoI ailix my signa- 30 6. In a safety razor,the combination .of a y

